Ion release from bioactive dental liner materials by ion chromatography

Area of Science:

• Biomaterials Science
• Dental Materials
• Biomineralization

Background:

• Bioactive liner materials promote dentine bridge formation and pulp healing.
• Ion release is critical for understanding the biomineralization role of these materials.
• Previous studies lacked simultaneous multi-ion analysis from various liners.

Purpose of the Study:

• To quantitatively and qualitatively analyze the simultaneous release of multiple ions from different dental liner materials using a single method.
• To compare ion release profiles and pH changes over 30 days.

Main Methods:

• Ion chromatography was used to measure 16 anions and cations in water.
• pH changes were monitored over 30 days.
• Tested materials included EXP, TC, DY, LL, FL, and MC.

Main Results:

• DY and MC showed significantly higher pH than FL after 30 days.
• Nine out of 16 ions were released in quantifiable amounts.
• Specific liners showed highest release for F⁻, Sr²⁺, Cl⁻, PO₄³⁻, SO₄²⁻, Ca²⁺, NH₄⁺, K⁺, and Na⁺.

Conclusions:

• Observed differences in ion release and pH provide insights into the biomineralization effects of dental liner materials.
• These findings are essential for future studies correlating ion release with monomer release in biological and clinical contexts.